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The battery is a sealed Lead Acid, the only thing it vents is a little hydrogen sometimes. Othewise it really IS sealed. This type of battery has been in use in home alarm systems for decades, so there is plenty of experience in using them in residential applications.
As for it overheating, the power dissipation in normal operation is on the order of 1 watt. It is pretty hard to heat an object the size of the battery very much with only 1 watt. It won't even get warm.
Lets see a little hydrogen, an enclosed space. Now all we need is a spark.
Why in the world is this under a bed?
Hi,
For anyone using the battery backup, have you found another battery that could last more than the 8 hours that FIOS claims? Last time I had a total power loss (hurricane Irene), the battery went out in about 8 hours and my home was totally cut off via phone. I never had that problem before switching to Fios. I don't like the fact that I may find myself in that predicament again. Thanks for your feedback
Get multiples of them and make sure they always charged. You can connect multiples in parallel to the backup unit and it will charge them all - parallel means plus - plus and minus to minus
Thanks for the reply viafx999. I guess I will be building a small battery bank soon.
12 volts is pretty much twelve volts. In other words an automobile storage battery would provide the same 12volts as the SLA.
I don't think there is anything to prevent you from hooking up the battery contacts in the ONT to a 12V automobile storage battery with some wire and alligator clips in an major outage.
. The charger in power supply would be incapable of fully charging such a battery, but that's the least of your worries. An 80Ah storage battery could power the ONT/telephone service for the better part of 4 days.
